v8/tools/check-static-initializers.sh

#!/bin/bash
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# Checks that the number of compilation units having at least one static
# initializer in d8 matches the one defined below.

# Allow:
#  - _GLOBAL__I__ZN2v810LineEditor6first_E
#  - _GLOBAL__I__ZN2v88internal32AtomicOps_Internalx86CPUFeaturesE
#  - _GLOBAL__I__ZN2v88internal8ThreadId18highest_thread_id_E
expected_static_init_count=3

v8_root=$(readlink -f $(dirname $BASH_SOURCE)/../)

if [ -n "$1" ] ; then
  d8="${v8_root}/$1"
else
  d8="${v8_root}/d8"
fi

if [ ! -f "$d8" ]; then
  echo "d8 binary not found: $d8"
  exit 1
fi

static_inits=$(nm "$d8" | grep _GLOBAL_ | grep _I_ | awk '{ print $NF; }')

static_init_count=$(echo "$static_inits" | wc -l)

if [ $static_init_count -gt $expected_static_init_count ]; then
  echo "Too many static initializers."
  echo "$static_inits"
  exit 1
else
  echo "Static initializer check passed ($static_init_count initializers)."
  exit 0
fi